Green Code Architects

The practice · Est. 2017

We design homes to be lived in, not just looked at.

Green Code Architects is an architecture and interiors practice designing private houses and residential buildings across London, from the careful remodelling of period homes to new apartment and mixed-use buildings.

Planning record

  • 9 yearsof planning, 2017 to 2026
  • 476planning applications submitted
  • 90%of sites ultimately approved
  • 54local planning authorities

Applications by the group's design practices, Oct 2017 to Oct 2026, from council planning registers. 243 of the 270 sites taken to a decision were approved, including on resubmission or appeal.

What we believe

A building should be judged by how well it is lived in

That means rooms of the right proportion, light where it is needed, materials that age well, and details that have been thought through rather than left to site.

  1. 01

    Judged by how it is lived in

    A building succeeds or fails in the everyday: the morning light in a kitchen, a stair that is easy to use, a room that is the right size for the life it holds.

  2. 02

    Light, proportion, material

    The qualities that endure. We design the height of a room, the depth of a reveal and the fall of daylight as carefully as the plan.

  3. 03

    Architecture and interiors as one

    The plan, the joinery, the lighting and the finishes are conceived together, so the house reads as one idea rather than a shell that is furnished later.

  4. 04

    Resolved before site

    Details are thought through on paper rather than left to the builder, so the building agreed is the building that is made.

Ten years in the making

From a London studio founded in July 2017 to a practice that has taken 476 planning applications to councils across 54 authorities.

  1. 2017

    Founded in London

    Green Code Architects is incorporated on 18 July 2017.

  2. 2022

    3 Gerard Road

    A semi-detached house becomes a multi-generational home, with a basement, wrap-around extension and loft.

  3. 2023

    18 Downsway

    A detached period house in South Croydon extended for a growing family, keeping its roof form.

  4. 2024

    77-79 Vallance Road

    Work begins on a nine-storey mixed-use building by Whitechapel Station.

  5. 2025

    23 Avonmore Road

    A redundant Victorian townhouse in a conservation area returned to family life.

  6. 2026

    476 applications

    Nine years of planning across 54 local authorities, with 90% of sites ultimately approved.

  7. 2027

    Ten years

    The practice marks its tenth anniversary in July 2027.

Directors

Each project is led by a design lead in our London studio from first meeting to completion, with a director involved throughout.

  • Sam De Silva

    Sam De Silva

    Chief Operating Officer

  • Daishan De Silva

    Managing Director

  • Barry Hayes

    Barry Hayes

    Director and Client Relationship Manager

Our studio

Based in north-west London

The practice is part of Green Code Holdings, alongside Green Code Engineering, Green Code Consultants and Green Code Developers. How the group works together

London studio

Unit D, 4 Humber Road, London NW2 6DW. Directors and design leads work here, and client meetings and site visits across London and the Home Counties are led from here.

+44 (0) 20 800 444 644

Careers

Join the studio

We are always pleased to hear from talented designers and technologists. Send your CV and portfolio to info@greencodeholdings.com with the subject line GCA_Vacancy.

Email your portfolio

Begin a conversation

Tell us a little about the house or site and we'll arrange a first conversation with a director. Or call us on +44 (0) 20 800 444 644.

  • Every enquiry is treated in confidence.
  • For sensitive settings, we'll outline the likely planning considerations at the first meeting.
  • Structure and planning reports are coordinated in-house with our sister practices.

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